maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>({
  1. TResult joinLinkPreviewView(
    1. JoinLinkPreviewView data
    )?,
  2. TResult disabledJoinLinkPreviewView(
    1. DisabledJoinLinkPreviewView data
    )?,
  3. TResult invalidJoinLinkPreviewView(
    1. InvalidJoinLinkPreviewView data
    )?,
  4. TResult unknown(
    1. Map<String, dynamic> data
    )?,
  5. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function( JoinLinkPreviewView data)?  joinLinkPreviewView,TResult Function( DisabledJoinLinkPreviewView data)?  disabledJoinLinkPreviewView,TResult Function( InvalidJoinLinkPreviewView data)?  invalidJoinLinkPreviewView,TResult Function( Map<String, dynamic> data)?  unknown,required TResult orElse(),}) {final _that = this;
switch (_that) {
case UEmbedJoinLinkViewJoinLinkPreviewJoinLinkPreviewView() when joinLinkPreviewView != null:
return joinLinkPreviewView(_that.data);case UEmbedJoinLinkViewJoinLinkPreviewDisabledJoinLinkPreviewView() when disabledJoinLinkPreviewView != null:
return disabledJoinLinkPreviewView(_that.data);case UEmbedJoinLinkViewJoinLinkPreviewInvalidJoinLinkPreviewView() when invalidJoinLinkPreviewView != null:
return invalidJoinLinkPreviewView(_that.data);case UEmbedJoinLinkViewJoinLinkPreviewUnknown() when unknown != null:
return unknown(_that.data);case _:
  return orElse();

}
}